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At time t second, a particle of mass 3 k...

At time t second, a particle of mass 3 kg has position vector r metre, where `r = 3that(i) - 4 cos t hat(j)`. Find the impulse of the force during the time interval `0 le t le(pi)/(2)`

A

`12 hatJ N -s`

B

`9 hatJ N -s`

C

`4 hatJ N -s`

D

`14 hatJ N -s`

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The correct Answer is:
A
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